N6纯镍丝表面裂纹的研究

15320086MetallicFunctionalMaterialsVol115,No13June,2008N61,1,2,1,2,1,3,3(1.,730050;2.,730050;3.,737100):N6,S-520,AlSiCa;EPMA1600,OCS,,,,,,,,:N6:N6;;:TG14614:A:1005-8192(2008)03-0029-05OnSurfaceCracksofPureNickelWireCHENLi1,XIATian2dong1,2,WANGXiao2jun1,2,SHENJie1,3,DONGSheng2mao3(1.KeyLaboratoryofNon-ferrousMetalAlloys,TheMinistryofEducation,LanzhouUniversityofTechnology,Lanzhou730050,China;2.StateKeyLaboratoryofGansuAdvancedNon-ferrousMetalMaterials,LanzhouUniversityofTechnology,Lanzhou730050,China;3.JinchuanGroupLimitedTechn,TechnicalCenterofJinchuanGroupLimited,Jinchuan737100,China)ABSTRACT:ThecracksoccurredonthesurfaceofpureNiwireN6anditsproducts(rivets)wereanalyzed.Thein2clusionsinthecrackswereobservedbyusingS-520scanningelectronicmicroscopeandAlSiCa,etcelementsintheinclusionswereanalyzedbyenergyspectrumanalysis.EPMA1600typeelectronicprobeanalyzerwereusedtoelementalanalysis.ItsdiscoveredthatelementssuchasOCSetcexistintheinclusions.Allofaboveindicatedtheinclusionsinthesamplesmaybecomposedofcompoundoxides.Inordertoidentifythetypeofimpurities,sampleswereobservedatpolarizedlightbymetallographicmicroscopeandsilicatewasfoundinimpurities.Toavoidtheeffectsofpreparingsamplesprocessontheimpurities,theinclusionswereseparatedbyelectrolyticseparationmeth2od.Thepreparednon2metalimpuritieswerealsoanalyzedbyenergyspectrumanalysis,andsimilarconclusionweremade.Combiningabovedifferentdetectiveways,theresultsshowthatagreatdealofnon2metalimpuritiesexistingintheinnerandsurfaceofpureNiwireN6isthemainreasonproducingthecracks.KEYWORDS:N6wire;surfacedefects;nonmetallicinclusions:(:2006-05);4J43(:ZGS064-A52-036-04):,,(1978-),,,,:13309488635;:[e-mail],,,,50%25m[12],,NiO,:99%,20,,,0101mm,113mm,,,,,,,[36],,1111N6:8mm,,N611N6/%()Table1ChemicalcompositionofwireN6/wt%SiCSTiNiFeAl01073010081010015010569917-991801062112(1):,,,(MeF3CCD),(2):(EPMA1600)(3):,,,,22111a(1158mm),013mm,N6(210mm),1b,,,,1Fig11Morphologyofsurfacecracks2128,S-520,,,FeOFeOAl2O3(:032008SiO2)2,32a,3a2a,,,,,,,,,[710]3a,,,,2Fig12Morphologyandcompositionofcracks,,,[11],4213,,,,EPMA16003Fig13Morphologyandcompositionofcracks4Fig14Morphologyofinclusionsatbrightfieldandpolarizedlight133:N656:5AlO,Al2O3;6OCaC,5Fig15Elementalareaanalysisoftheinclusions214,,,7a8a,a;AlSiCaFe215N6,AlOSiCaC::,,,,,,[12],,,,,,6Fig16Elementalareaanalysisoftheinclusions,:N63(1)N6,AlOSiCaC;(2);(3),,,2320087Fig17Morphologyandcompositionofinclusions8Fig18Morphologyandcompositionofinclusions:[1]YangRong-zun().[J].Welding&Joining(),2006,(12):54.[2]MengJun().[J].Jour2nalofRocketPropulsion(),2006,32(4):43.[3]SouptelD,LÊserW,GrunerW,etal.Oxygenasimpurityincrystalgrowthofintermetallics[J].JournalofCrystalGrowth,2007,307(2):410.[4]ZhangBW,LiBW.Growthkineticsofsingleinclusionparticleinmoltenmelts[J].ActaMetallurgicaSinica(EnglishLetters),2007,20(2):129.[5]RezaAfsharM,RezaAboutalebiM,IsacM,etal.Mathematicalmodelingofelectromagneticseparationofinclusionsfrommag2nesiummeltinarectangularchannel[J].MaterialsLetters,2007,61(10):2045.[6]PfeilerC,WuM,LudwigA.Influenceofargongasbubblesandnon-metallicinclusionsontheflowbehaviorinsteelcontinuouscasting[J].MaterialsScienceandEngineering,2005,A413-414(15):115.[7]MarcolinoFernandes,NoCheung,AmauriGarcia.Investigationofnonmetallicinclusionsincontinuouslycastcarbonsteelbydis2solutionoftheferriticmatrix[J].MaterialsCharacterization,2002,48(4):255.[8]YoshiyukiTomita.Effectofmorphologyofnonmetallicinclu2sionsontensilepropertiesofquenchedandtempered0.4C-Cr-Mo-Nisteel[J].MaterialsCharacterization,1995,34(2):121.[9]MarcolinoFernandes,JosCarlosPires,NoCheung,etal.In2fluenceofrefiningtimeonnonmetallicinclusionsinalow-car2bon,silicon-killedsteel[J].MaterialsCharacterization,2003,51(5):301.[10]KiesslingR,LangeN.Non-metallicInclusionsinSteel,partsI-IV[M].London:MetalsSociety,1978.[11]ZhangDetang().Distinctionnon-metallicinclusionsinSteel()[M].Beijing:Defenseindustrypublishinghouse,1991.[12]KiesslingR,LangeN.Non-metallicinclusioninSteel,part[M].London:Theironandsteelinstitute,1964.:2008-01-04333:N6